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| 1 | + | |
| 2 | +/* This code implemented by Mark Hammond (MHammond@skippinet.com.au) */ | |
| 3 | + | |
| 4 | +#include <windows.h> | |
| 5 | +#include <limits.h> | |
| 6 | +#include <pydebug.h> | |
| 7 | + | |
| 8 | +long PyThread_get_thread_ident(void); | |
| 9 | + | |
| 10 | +/* | |
| 11 | + * Change all headers to pure ANSI as no one will use K&R style on an | |
| 12 | + * NT | |
| 13 | + */ | |
| 14 | + | |
| 15 | +/* | |
| 16 | + * Initialization of the C package, should not be needed. | |
| 17 | + */ | |
| 18 | +static void PyThread__init_thread(void) | |
| 19 | +{ | |
| 20 | +} | |
| 21 | + | |
| 22 | +/* | |
| 23 | + * Thread support. | |
| 24 | + */ | |
| 25 | +long PyThread_start_new_thread(void (*func)(void *), void *arg) | |
| 26 | +{ | |
| 27 | + long rv; | |
| 28 | + int success = -1; | |
| 29 | + | |
| 30 | + dprintf(("%ld: PyThread_start_new_thread called\n", PyThread_get_thread_ident())); | |
| 31 | + if (!initialized) | |
| 32 | + PyThread_init_thread(); | |
| 33 | + | |
| 34 | + rv = _beginthread(func, 0, arg); /* use default stack size */ | |
| 35 | + | |
| 36 | + if (rv != -1) { | |
| 37 | + success = 0; | |
| 38 | + dprintf(("%ld: PyThread_start_new_thread succeeded:\n", PyThread_get_thread_ident())); | |
| 39 | + } | |
| 40 | + | |
| 41 | + return success; | |
| 42 | +} | |
| 43 | + | |
| 44 | +/* | |
| 45 | + * Return the thread Id instead of an handle. The Id is said to uniquely identify the | |
| 46 | + * thread in the system | |
| 47 | + */ | |
| 48 | +long PyThread_get_thread_ident(void) | |
| 49 | +{ | |
| 50 | + if (!initialized) | |
| 51 | + PyThread_init_thread(); | |
| 52 | + | |
| 53 | + return GetCurrentThreadId(); | |
| 54 | +} | |
| 55 | + | |
| 56 | +static void do_PyThread_exit_thread(int no_cleanup) | |
| 57 | +{ | |
| 58 | + dprintf(("%ld: do_PyThread_exit_thread called\n", PyThread_get_thread_ident())); | |
| 59 | + if (!initialized) | |
| 60 | + if (no_cleanup) | |
| 61 | + exit(0); /* XXX - was _exit()!! */ | |
| 62 | + else | |
| 63 | + exit(0); | |
| 64 | + _endthread(); | |
| 65 | +} | |
| 66 | + | |
| 67 | +void PyThread_exit_thread(void) | |
| 68 | +{ | |
| 69 | + do_PyThread_exit_thread(0); | |
| 70 | +} | |
| 71 | + | |
| 72 | +void PyThread__exit_thread(void) | |
| 73 | +{ | |
| 74 | + do_PyThread_exit_thread(1); | |
| 75 | +} | |
| 76 | + | |
| 77 | +#ifndef NO_EXIT_PROG | |
| 78 | +static void do_PyThread_exit_prog(int status, int no_cleanup) | |
| 79 | +{ | |
| 80 | + dprintf(("PyThread_exit_prog(%d) called\n", status)); | |
| 81 | + if (!initialized) | |
| 82 | + if (no_cleanup) | |
| 83 | + _exit(status); | |
| 84 | + else | |
| 85 | + exit(status); | |
| 86 | +} | |
| 87 | + | |
| 88 | +void PyThread_exit_prog(int status) | |
| 89 | +{ | |
| 90 | + do_PyThread_exit_prog(status, 0); | |
| 91 | +} | |
| 92 | + | |
| 93 | +void PyThread__exit_prog(int status) | |
| 94 | +{ | |
| 95 | + do_PyThread_exit_prog(status, 1); | |
| 96 | +} | |
| 97 | +#endif /* NO_EXIT_PROG */ | |
| 98 | + | |
| 99 | +/* | |
| 100 | + * Lock support. It has to be implemented using Mutexes, as | |
| 101 | + * CE doesnt support semaphores. Therefore we use some hacks to | |
| 102 | + * simulate the non reentrant requirements of Python locks | |
| 103 | + */ | |
| 104 | +PyThread_type_lock PyThread_allocate_lock(void) | |
| 105 | +{ | |
| 106 | + HANDLE aLock; | |
| 107 | + | |
| 108 | + dprintf(("PyThread_allocate_lock called\n")); | |
| 109 | + if (!initialized) | |
| 110 | + PyThread_init_thread(); | |
| 111 | + | |
| 112 | + aLock = CreateEvent(NULL, /* Security attributes */ | |
| 113 | + 0, /* Manual-Reset */ | |
| 114 | + 1, /* Is initially signalled */ | |
| 115 | + NULL); /* Name of event */ | |
| 116 | + | |
| 117 | + dprintf(("%ld: PyThread_allocate_lock() -> %p\n", PyThread_get_thread_ident(), aLock)); | |
| 118 | + | |
| 119 | + return (PyThread_type_lock) aLock; | |
| 120 | +} | |
| 121 | + | |
| 122 | +void PyThread_free_lock(PyThread_type_lock aLock) | |
| 123 | +{ | |
| 124 | + dprintf(("%ld: PyThread_free_lock(%p) called\n", PyThread_get_thread_ident(),aLock)); | |
| 125 | + | |
| 126 | + CloseHandle(aLock); | |
| 127 | +} | |
| 128 | + | |
| 129 | +/* | |
| 130 | + * Return 1 on success if the lock was acquired | |
| 131 | + * | |
| 132 | + * and 0 if the lock was not acquired. This means a 0 is returned | |
| 133 | + * if the lock has already been acquired by this thread! | |
| 134 | + */ | |
| 135 | +int PyThread_acquire_lock(PyThread_type_lock aLock, int waitflag) | |
| 136 | +{ | |
| 137 | + int success = 1; | |
| 138 | + DWORD waitResult; | |
| 139 | + | |
| 140 | + dprintf(("%ld: PyThread_acquire_lock(%p, %d) called\n", PyThread_get_thread_ident(),aLock, waitflag)); | |
| 141 | + | |
| 142 | +#ifndef DEBUG | |
| 143 | + waitResult = WaitForSingleObject(aLock, (waitflag ? INFINITE : 0)); | |
| 144 | +#else | |
| 145 | + /* To aid in debugging, we regularly wake up. This allows us to | |
| 146 | + break into the debugger */ | |
| 147 | + while (TRUE) { | |
| 148 | + waitResult = WaitForSingleObject(aLock, waitflag ? 3000 : 0); | |
| 149 | + if (waitflag==0 || (waitflag && waitResult == WAIT_OBJECT_0)) | |
| 150 | + break; | |
| 151 | + } | |
| 152 | +#endif | |
| 153 | + | |
| 154 | + if (waitResult != WAIT_OBJECT_0) { | |
| 155 | + success = 0; /* We failed */ | |
| 156 | + } | |
| 157 | + | |
| 158 | + dprintf(("%ld: PyThread_acquire_lock(%p, %d) -> %d\n", PyThread_get_thread_ident(),aLock, waitflag, success)); | |
| 159 | + | |
| 160 | + return success; | |
| 161 | +} | |
| 162 | + | |
| 163 | +void PyThread_release_lock(PyThread_type_lock aLock) | |
| 164 | +{ | |
| 165 | + dprintf(("%ld: PyThread_release_lock(%p) called\n", PyThread_get_thread_ident(),aLock)); | |
| 166 | + | |
| 167 | + if (!SetEvent(aLock)) | |
| 168 | + dprintf(("%ld: Could not PyThread_release_lock(%p) error: %l\n", PyThread_get_thread_ident(), aLock, GetLastError())); | |
| 169 | +} | |
| 170 | + | |
| 171 | + | |